<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="./lib/vue-2.4.0.js"></script>
</head>
<body>
    <div id="app">
        <input type="button" value="获取元素" @click="getElement">
        <h3 id="myh3" ref="myh3">大吉大利，今晚吃鸡~</h3>
        <hr>
        <login ref="mylogin"></login>
    </div>

    <script>

        var login={
            template:'<h1>登录组件</h1>',
            data(){
                return{
                    msg :'son msg'
                }
            },
            methods:{
                show(){
                    console.log('调用了子组件的方法')
                }
            }
        }

        var vm = new Vue({
            el : "#app",
            data : {

            },
            methods : {
                getElement(){
                    //console.log(document.getElementById('myh3').innerText)
                    // refs 
                    //console.log(this.$refs.myh3.innerText)
                    //console.log(this.$refs.mylogin.msg)
                    this.$refs.mylogin.show()
                }
            },
            components:{
                login
            }
        })
    </script>
</body>
</html>